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적정(適正) 홍수빈도(洪水頻度)와 위험도(危險度) 분석(分析)에 관(關)한 연구(硏究) - 년최고치(年最高値) 계열(系列)을 중심(中心)으로 -
이순혁 ( Soon Hyuk Lee ),박명근 ( Myeong Geun Park ) 한국농공학회 1983 韓國農工學會誌 : 전원과 자원 Vol.25 No.3
This studies were attempted to get best fitted distribution, the equations for probable maximum flows and design flood in relation to the risk analysis which can be correlated with return period and the life of structure. Six watersheds for the annual maximum series were selected as studying basins along Han, Geum, and Seom Jin River. The results through this studies were analyzed and summarized as follows. 1. Three parameter lognormal distribution was shown as a best fitted one among some other distributions in the annual maximum series. 2. Probable flood flows following the return periods were obtained by three parameter lognormal distribution for six watersheds. 3. Risk can be simplified as have connection with return periods and the design life of structure. 4. Formulars of risks, U were derived as the form of U=1-e-(R/ae<sup>bR</sup>) by correlating the life of structure with standardized variate, K for six watersheds. 5. Formulars of standardized variate, K for design flood were derived as K=a(log<sub>e</sub>bT<sub>r</sub>) under the condition of the return periods identify with design life of structure within the range of ten percentage of risk.